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electronics:rx:techinfo:documentation_2_8cm_rx_s28mm

Technical Documentation of the 2.8 cm Receiver 10.3 - 10.6 GHz (S28mm)

TypeHEMT cooled
Channels4
Receiver Noise50K
Frequency range10.3 - 10.6 GHz
PolarizationLHC/RHC 2 horns
CalibrationNoise diode
Polarimeter Broadband Polarimeter
1st IF2.2 - 2.3 GHz
LO1Valon 5009 fsynt.1 = 4.15 GHz x 2 (preset 8.3 GHz)
2nd IF100 - 200 MHz
LO2Valon 5009 fsynt.2 = 2.1 GHz (preset 2.1 GHz)

Simplified Block Diagram of the receiver, (RK on 24.4.2018)

Comment

The system comprises 2 feeds, 4 channels and 2 Broadband Polarimeters. 8 data channels, 2 total power and 2 polarization signals per feed are recorded. This total power system is being used in a "software beamswitching" mode to observe extended sources. The feeds are mounted in a row in azimuth direction, having a distance of approximately 3 arcmin. The frequency scheme is fix, the receiver has built-in local oscillators that can't be changed. The RF-filter is essential to protect against TV-satellites. The system needs special offline reduction programmes.

electronics/rx/techinfo/documentation_2_8cm_rx_s28mm.txt · Last modified: 2019/12/13 11:52 by ubach